Directions: Read the questions carefully. Write the letter of the correct answer.
1.) If a random sample size 16 is taken with replacement from the population 1, 1, 1, 2, 4, 5, 5, and 6. what is the mean? a. 25/8 or 3.13 b. 35/8 or 4.375 c. 26/5 or 5.2 d. 27/4 or 6.75 32
2.) Refer to question 1. What is the variance? a. 3.86 b. 3.88 c. 3.87 d. 3.99 33
3.)What is the t- value when n = 22 at x = 0.01 a. t = 2.518 b. t = 2.616 c. t = 2.723 d. t = 1.999
4.) What is the area between t 0.02 and -t 0.01? a. 0.97 b. 0.98 c. 0.99 d. 0.95
5.) Find the t-value when u= 47, * = 45, s = 4 and n = 25. a. 1.5 b. 2.5 c. 3.5 d. 4.5
6.) Compute the 95% confidence interval estimate of u given the following s = 9, n = 12, and x = 27. a. 23.19 < u < 30.81 b. 22.19 < u < 30.81 c. 21.19 < u < 30. 81 d. 24.19 < u < 30.81